CN105048077B - Double triangle groove embeds co-planar waveguide monopole and enters to have more antenna more - Google Patents
Double triangle groove embeds co-planar waveguide monopole and enters to have more antenna more Download PDFInfo
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- CN105048077B CN105048077B CN201510328477.7A CN201510328477A CN105048077B CN 105048077 B CN105048077 B CN 105048077B CN 201510328477 A CN201510328477 A CN 201510328477A CN 105048077 B CN105048077 B CN 105048077B
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- 230000005404 monopole Effects 0.000 title claims abstract description 48
- 239000004020 conductor Substances 0.000 claims abstract description 21
- 239000000758 substrate Substances 0.000 claims abstract description 21
- 230000005855 radiation Effects 0.000 claims description 11
- 230000008878 coupling Effects 0.000 description 10
- 238000010168 coupling process Methods 0.000 description 10
- 238000005859 coupling reaction Methods 0.000 description 10
- 230000005284 excitation Effects 0.000 description 9
- 238000002955 isolation Methods 0.000 description 9
- 238000004891 communication Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000003071 parasitic effect Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000001808 coupling effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
Double triangle groove embeds co-planar waveguide monopole and enters to have more antenna more, is related to and enters to have more antenna more.Provided with medium substrate, radiating monopole, upper and lower surface good conductor layer；Upper surface good conductor layer is provided with 2 isosceles triangle grooves, 2 isosceles triangle grooves are reversely distributed with center line and in diagonal 180 degree, radiating monopole is embedded in the isosceles triangle groove of bottom, radiating monopole is provided with the wider rectangular patch of the narrower rectangular patch in top and bottom, the gradual change clearance channel of the identical symmetrical distribution of 2 structures is provided with sub two sides of radiating monopole, gradual change clearance channel passes to upper surface good conductor layer base edge by bottom isosceles triangle bottom land edge, and gradual change clearance channel includes the wider rectangular channel on top and the narrower rectangular channel of bottom；Horizontal direction gradual change microstrip line is provided with the good conductor layer of lower surface, gradual change microstrip line also is provided with wider rectangular patch and narrower rectangular patch by the horizontally interior extension of medium substrate side, gradual change microstrip line.
Description
Technical field
The present invention relates to one kind to enter to have more (MIMO) antenna more, more particularly to one kind utilizes monopole spy orthogonal with triangle
The double triangles of hourglass-shaped gradual change coupling that double-fed high-isolation is applied on WLAN (WLAN) are realized in sign mode current excitation
Shape groove embeds co-planar waveguide monopole mimo antenna.
Background technology
MIMO (Multiple-Input Multiple-Output) technologies as in communication system of new generation it is important should
With, can be on the premise of being not take up extra spectrum bandwidth and not increasing transmission power, maximized utilization space radio transmission
The uncorrelated subchannel of system transmits different information flows.The channel capacity for causing wireless system is obtained increasing at double by this
It is long, and then the rate of information throughput of wireless communication system is improved, therefore the design of high-isolation antenna also turns into technology development
Core.
Mimo antenna system is cooperating between multiple antenna elements or port, and antenna amount and unit spacing are again
It is mutually to restrict, both are the key parameter of antenna System Design.And contemporary wireless terminals integration of equipments needs design cell
Antenna size and spacing are sufficiently small, in addition, the increase of antenna amount will certainly also influence mutual coupling effect between element antenna and
Correlation, high coupling effect caused by small spacing can damage the performances such as the capacity of communication system.But conventional MIMO antenna is set
Meter, it is to realize that antenna decouples decorrelation by loading decoupling network or parasitic element, this technology adds antenna structure
Complexity, and the decoupling minor matters and parasitic element that introduce also have an impact to own resonance.Therefore, design is female using antenna element
Body special construction itself decouples decorrelation, to realize the high-isolation performance required for antenna port, the special construction of loading
Also resonant body can be used as to reduce antenna electric size, is the important thinking of research and development mimo antenna technology.
The content of the invention
It is an object of the invention to overcome current mimo antenna realize unit or port isolation configuration aspects the defects of, weight
Point is solved on the basis of not increasing extra decoupling network circuit and being not loaded with parasitic element, special in itself using antenna element parent
Different structure decoupling decorrelation, to realize high-isolation port performance requirement of the wireless communications application system to mimo antenna, is carried
There is preferable polarity diversity performance for one kind, effectively expand working band, can also continue to optimization and realize ultra wide band (UWB) system
Hourglass-shaped gradual change coupling double triangle groove embed co-planar waveguide monopole mimo antenna.
To achieve the above object, the present invention adopts the following technical scheme that：
The present invention is provided with medium substrate, radiating monopole, the upper surface good conductor layer on medium substrate and lower surface
Good conductor layer；Upper surface good conductor layer is provided with the isosceles triangle groove of upper and lower part 2, and top isosceles triangle groove is small isosceles
Vee gutter, bottom isosceles triangle groove are big isosceles triangle groove, 2 same center lines of isosceles triangle groove, 2 isoceles triangles
Shape groove couples double triangle groove for symmetrical hourglass-shaped gradual change, and 2 isosceles triangle grooves are reversely to divide in diagonal 180 degree
Cloth, connected by elongated gap between upper and lower two vee gutters, radiating monopole is embedded in the isosceles triangle groove of bottom, radiation
Monopole is provided with the wider rectangular patch of the narrower rectangular patch in top and bottom, wherein narrower rectangular patch is monopole spoke
Arm is penetrated, wider rectangular patch is microstrip feed structures, and it is identical symmetrical point to be provided with 2 structures in sub two sides of radiating monopole
The ladder clearance channel of cloth, ladder clearance channel pass to upper surface good conductor layer base edge, rank by bottom isosceles triangle bottom land edge
Ladder stitch slot includes the wider rectangular channel on top and the narrower rectangular channel of bottom；It is good in the lower surface below small vee gutter
Conductor layer is provided with horizontal direction ladder microstrip line, and horizontally interior extension, ladder are micro- by medium substrate side for ladder microstrip line
Wider rectangular patch and narrower rectangular patch also are provided with line.
The medium substrate can use FR4 medium substrates, and the dielectric constant of the medium substrate can be 4.0~5.0, best
For 4.4 ± 5%.The medium substrate is rectangular configuration, and its size can be：50.0~55.0mm of length, width 35.0~
40.0mm, 1.5~2.0mm of thickness.
The elongated gap is rectangular aperture, and its size can be：1.0~3.0mm of length, 0.5~1.5mm of width.
The base length of the top isosceles triangle groove is 6.0~8.5mm, and waist edge length is 7.0~9.5mm；Bottom
The base length of isosceles triangle groove is 23.0~26.0mm, and waist edge length is 18.0~22.0mm.2 isosceles triangle grooves
Each length of side is adjustable, and electrical characteristics of a antenna is can control by adjusting length of side value.
The length of the narrower rectangular patch in the top of radiating monopole be 15.0~19.0mm, width for 1.0~
3.0mm.The length of the wider rectangular patch 21 in bottom is 12.0~15.0mm, and width is 2.0~4.0mm.
The size of the ladder clearance channel can be：The length of the wider rectangular channel on top is 11.0~14.0mm, and width is
0.1~0.5m；The length of the narrower rectangular channel of bottom is 8.0~10.0mm, and width is 2.0~4.0mm.Ladder clearance channel
Length, width are adjustable, and accurately impedance matching needed for second port monopole is realized by regulation.
The wider rectangular patch size of the ladder microstrip line can be：4.0~6.0mm of length, 2.0~4.0mm of width；
The narrower rectangular patch size of the ladder microstrip line can be：17.0~21.0mm of length, 0.2~1.0mm of width.The rank
The length and width of terraced rectangular microstrip is adjustable, and accurately impedance needed for the small vee gutter resonance of second port is realized by regulation
Match somebody with somebody.
Compared with the prior art, beneficial effects of the present invention are as follows：
The radiating monopole subdivision of the present invention is as first port, and ladder microstrip line part is as second port.First
The triangle channel-shaped ground plate section loading of port coplanar wave guide feedback monopole periphery couples small vee gutter, as second port
Resonance main body, the larger orthogonal feed port of 2 physics spacing is formed, wherein first port is fed as co-planar waveguide monopole
Port, second port is as vee gutter feed port.Antenna structure is simply ingenious, utilizes first port co-planar waveguide monopole
The adding carrier that ground plate section encourages as second port, slot-coupled and vee gutter resonance skill are combined in second port part
Art, and coupling feed way excitation is closed on using special, so as to which range site antenna parent realizes decoupling in itself and goes phase
Guan Xing.Radiation field of aerial has complementary effect, has preferable polarity diversity performance.The loading of mutual coupling groove-like structure is effectively expanded
Working band, can also continue the mimo antenna that ultra wide band (UWB) system is realized in optimization.Bottom isosceles triangle groove is set to be open
The length of groove, width are adjustable, and accurately impedance matching needed for second port monopole is realized by regulation.
Instant invention overcomes current mimo antenna realize unit or port isolation configuration aspects the defects of, intends emphasis and solves
On the basis of not increasing extra decoupling network circuit and being not loaded with parasitic element, special construction of antenna element parent itself is utilized
Decorrelation is decoupled, to realize high-isolation port performance requirement of the wireless communications application system to mimo antenna.Day of the present invention
The ingenious adding carrier encouraged by the use of first port co-planar waveguide monopole ground plate section as second port of line, makes antenna size
Greatly reduce, close on coupling feed way excitation using special at second port, not only improve the electrical property of antenna, also make
The practical application of antenna greatly reinforces, and realizes the dual innovation of antenna performance and structure.
Brief description of the drawings
Fig. 1 is one of overall structure diagram of the embodiment of the present invention.
Fig. 2 is the two of the overall structure diagram of the embodiment of the present invention.
Fig. 3 is the upper surface good conductor Rotating fields schematic diagram of the embodiment of the present invention.
Fig. 4 is the lower surface good conductor Rotating fields schematic diagram of the embodiment of the present invention.
Fig. 5 is the return loss (S of the embodiment of the present invention11、S22) and port isolation loss (S21) performance map.Horizontal stroke in Fig. 5
Coordinate representation frequency (GHz), ordinate represent loss intensity (dB).
Fig. 6 is the E-plane and H-plane pattern of first port of embodiment of the present invention monopole excitation.In figure 6, coordinate is pole
Coordinate.
Fig. 7 is the E-plane and H-plane pattern of the small vee gutter excitation of second port of the embodiment of the present invention.In the figure 7, coordinate
For polar coordinates.
Embodiment
With reference to embodiment and accompanying drawing, the invention will be further described.
Hourglass-shaped gradual change coupling double triangle groove of the present invention and the monopole with ladder clearance channel coplanar wave guide feedback
Radiation arm, the symmetrical hourglass-shaped double isosceles triangles of gradual change coupling, upper and lower isosceles triangle is in 180 degree antisymmetry point
Cloth, thin head are connected by elongate rectangular gap.Isosceles big vee gutter in bottom embeds ladder rectangular monopole radiation arm, described specific
Radiation frequency is 2.40~2.50GHz, and the lower section both sides of arm respectively come with rectangular microband paste, form first port co-planar waveguide
The monopole ground plate section of excitation.Using the ground plate section of first port co-planar waveguide, i.e., fluting shape directly over monopole
Into the small vee gutter of top isosceles, second port resonance main body is formed.Water is loaded in small vee gutter lower dielectric substrate back
Square to ladder microstrip line, the small vee gutter of second port is carried out to close on couple feed excitation.
With reference to specific embodiments and the drawings, the invention will be further described.
Referring to Fig. 1~4, the embodiment of the present invention be provided with medium substrate 1, radiating monopole 2, upper surface good conductor layer 3 and under
Surface good conductor layer 4.The dielectric constant of medium substrate 1 is 4.4, and length is 51.7mm ± 0.2mm, and width is 38.4mm ± 0.2
Mm, thickness are 1.6mm ± 0.05mm.Upper surface good conductor layer 3 is provided with upper and lower 2 isosceles triangle grooves 31 and 32,2 isosceles three
31 and 32 same center line of angle-shaped groove, 2 isosceles triangle grooves 31 and 32 are the symmetrical double triangles of hourglass-shaped gradual change coupling
Shape groove, 2 isosceles triangle grooves 31 and 32 are reversely to be distributed in diagonal 180 degree.The base length of its medium and small vee gutter 31 is
6.9 ± 0.2mm, waist length are 7.9 ± 0.2mm；The big base length of vee gutter 32 is 24.7 ± 0.3mm, and waist length is 20.3
±0.3mm.Thin head is connected by elongated gap 33 between upper and lower two triangles 31 and 32, the length of elongated gap 33 for 1.9 ±
0.2mm, width are 1.0 ± 0.2mm, and elongated gap 33 is also used for the special coupling unit for closing on feed of second port.Upper table
Face good conductor layer 3 is provided with the rectangular step monopole radiation arm of the mimo antenna with mutual coupling, wherein narrower rectangular patch is
Monopole radiation arm 22, the length of monopole radiation arm 22 is 17.6 ± 0.3mm, and width is 2.0 ± 0.1 mm；Wider rectangle
Paster is microstrip feed structures 21, and the length of microstrip feed structures 21 is 13.2 ± 0.3mm, and width is 3.2 ± 0.1mm.In rank
Terraced monopole radiation arm both sides are provided with the ladder clearance channel 34 and 35 of the identical symmetrical distribution of 2 structures, ladder clearance channel 34
The length of Upper rectangular slot part is 8.8 ± 0.2mm, and width is 3.0 ± 0.1mm, the lower rectangular gap portion of ladder clearance channel 34
The length divided is 13.2 ± 0.2mm, and width is 0.2 ± 0.02mm.In the lower surface good conductor below small vee gutter 31
Layer 4 is provided with horizontal direction ladder microstrip line, and ladder microstrip line is by the horizontally interior extension, including ladder of the side of medium substrate 1
Microstrip feed structures 41 and ladder microstrip feed structures 42, the small vee gutter of second port 31 is carried out closing on couple feed and swashed
Encourage, the length of ladder microstrip feed structures 41 is 5.0 ± 0.2mm, and width is 3.2 ± 0.1mm；Ladder microstrip feed structures 42 are grown
It is 0.6 ± 0.02mm to spend for 19.2 ± 0.2mm, width.
Referring to Fig. 5, Fig. 5 is return loss (S11、S22) and port isolation loss (S21) (antenna impedance frequency is special for performance map
Linearity curve figure).As seen from Figure 5, -10dB the impedance bandwidth ranges of co-planar waveguide first port are 2.28~2.61GHz (relative
With it is a width of 14%), closing on -20dB the impedance bandwidth ranges of microstrip-fed port 41, (relative bandwidth is for 1.95~3.11GHz
48%).In 2.4~2.5GHz WLAN working bands, S22Modulus value be both less than -30dB.
Referring to Fig. 6, Fig. 6 is the E-plane and H-plane pattern of first port of embodiment of the present invention monopole excitation.
Referring to Fig. 7, Fig. 7 is the E-plane and H-plane pattern of the small vee gutter excitation of second port of the embodiment of the present invention.
Claims (9)
- Enter to have more antenna 1. double triangle groove embeds co-planar waveguide monopole, it is characterised in that single provided with medium substrate, radiation more Extremely son, upper surface good conductor layer and lower surface good conductor layer on medium substrate；Upper surface good conductor layer be provided with top and The isosceles triangle groove of bottom 2, top isosceles triangle groove are small isosceles triangle groove, and bottom isosceles triangle groove is big isosceles Vee gutter, 2 same center lines of isosceles triangle groove, 2 isosceles triangle grooves couple for symmetrical hourglass-shaped gradual change Double triangle groove, 2 isosceles triangle grooves is reversely are distributed in diagonal 180 degree, by elongate slot between upper and lower two vee gutters Gap is connected, and radiating monopole is embedded in the isosceles triangle groove of bottom, radiating monopole be provided with the narrower rectangular patch in top and The wider rectangular patch in bottom, wherein narrower rectangular patch is monopole radiation arm, wider rectangular patch is microstrip-fed Structure, the ladder clearance channel of the identical symmetrical distribution of 2 structures is provided with sub two sides of radiating monopole, ladder clearance channel is under Portion isosceles triangle bottom land edge passes to upper surface good conductor layer base edge, ladder clearance channel include top wider rectangular channel and The narrower rectangular channel of bottom, horizontal direction ladder micro-strip is provided with the lower surface good conductor layer below small vee gutter Line, ladder microstrip line by the horizontally interior extension of medium substrate side, ladder microstrip line also be provided with wider rectangular patch and compared with Narrow rectangular patch.
- Enter to have more antenna 2. double triangle groove as claimed in claim 1 embeds co-planar waveguide monopole, it is characterised in that described more Medium substrate uses FR4 medium substrates, and the dielectric constant of the medium substrate is 4.0~5.0.
- Enter to have more antenna 3. double triangle groove as claimed in claim 2 embeds co-planar waveguide monopole, it is characterised in that described more The dielectric constant of medium substrate is 4.4 ± 5%.
- Enter to have more antenna 4. double triangle groove as claimed in claim 1 embeds co-planar waveguide monopole, it is characterised in that described more Medium substrate is rectangular configuration, and its size is：50.0~55.0mm of length, 35.0~40.0mm of width, 1.5~2.0mm of thickness.
- Enter to have more antenna 5. double triangle groove as claimed in claim 1 embeds co-planar waveguide monopole, it is characterised in that described more Elongated gap is rectangular aperture, and its size is：1.0~3.0mm of length, 0.5~1.5mm of width.
- Enter to have more antenna 6. double triangle groove as claimed in claim 1 embeds co-planar waveguide monopole, it is characterised in that described more The base length of top isosceles triangle groove is 6.0~8.5mm, and waist edge length is 7.0~9.5mm；Bottom isosceles triangle groove Base length be 23.0~26.0mm, waist edge length is 18.0~22.0mm.
- Enter to have more antenna 7. double triangle groove as claimed in claim 1 embeds co-planar waveguide monopole, it is characterised in that described more The length of the narrower rectangular patch in the sub top of radiating monopole is 15.0~19.0mm, and width is 1.0~3.0mm；Bottom is wider The length of rectangular patch 21 be 12.0~15.0mm, width is 2.0~4.0mm.
- Enter to have more antenna 8. double triangle groove as claimed in claim 1 embeds co-planar waveguide monopole, it is characterised in that described more The size of ladder clearance channel is：The length of the wider rectangular channel on top is 11.0~14.0mm, and width is 0.1~0.5m；Bottom The length of narrower rectangular channel be 8.0~10.0mm, width is 2.0~4.0mm.
- Enter to have more antenna 9. double triangle groove as claimed in claim 1 embeds co-planar waveguide monopole, it is characterised in that described more The wider rectangular patch size of ladder microstrip line is：4.0~6.0mm of length, 2.0~4.0mm of width；Ladder microstrip line compared with Narrow rectangular patch size is：17.0~21.0mm of length, 0.2~1.0mm of width.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510328477.7A CN105048077B (en) | 2015-06-15 | 2015-06-15 | Double triangle groove embeds co-planar waveguide monopole and enters to have more antenna more |
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| CN201510328477.7A CN105048077B (en) | 2015-06-15 | 2015-06-15 | Double triangle groove embeds co-planar waveguide monopole and enters to have more antenna more |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018171891A1 (en) * | 2017-03-24 | 2018-09-27 | Huawei Technologies Co., Ltd. | Mimo antenna module |
| CN108172995B (en) * | 2018-02-08 | 2023-06-30 | 深圳信息通信研究院 | Multi-frequency high-isolation MIMO antenna |
| CN108767470A (en) * | 2018-07-12 | 2018-11-06 | 河北工业大学 | A kind of discrete embedded medium resonator antenna of ultra wideband omni-directional low section |
| TWI678844B (en) * | 2018-11-23 | 2019-12-01 | 和碩聯合科技股份有限公司 | Antenna structure |
| US11349220B2 (en) * | 2020-02-12 | 2022-05-31 | Veoneer Us, Inc. | Oscillating waveguides and related sensor assemblies |
| CN112864628A (en) * | 2021-01-13 | 2021-05-28 | 上海闻泰信息技术有限公司 | Antenna structure and wearable equipment |
| CN114256619A (en) * | 2021-12-02 | 2022-03-29 | 维沃移动通信有限公司 | Antenna and electronic device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101026265A (en) * | 2007-03-12 | 2007-08-29 | 中国人民解放军总参谋部第六十三研究所 | High performance frequency reconfigurable antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8570222B2 (en) * | 2009-01-15 | 2013-10-29 | Broadcom Corporation | Antenna structures and applications thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101026265A (en) * | 2007-03-12 | 2007-08-29 | 中国人民解放军总参谋部第六十三研究所 | High performance frequency reconfigurable antenna |
Non-Patent Citations (1)
| Title |
|---|
| "High isolation dual-port MIMO antenna";W.W. Li等;《Electronics Letters》;20130725;第49卷(第15期);全文 * |
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